<?php

if (!isset($_SESSION)) {
    session_start();
}
ob_start();
if (isset($_REQUEST['btnLogin'])) {

    include 'operations/connection.php';
    $username = $_REQUEST['txtUser'];
    $password = md5($_REQUEST['txtPass']);


    include "operations/login-result.php";

    if ($username == "" || $password = "") {

        $errorMessage = "Fill up all fields.";
        $_SESSION['error'] = "Fill up all fields.";
        header('Location: login.php');
    } else {
        echo authenticate($username, $_REQUEST['txtPass']);
    }
}
?>
<? ob_flush(); ?>